The Baffin Control Max is rated for adventurous pursuits in extreme cold temperatures. Polar ProvenA(R) in some of the world&';s harshest climates, CONTROL MAX is not only technically superior, but also lightweight and flexible. Recommended during moderate levels activity, CONTROL MAX offers everything you need in a performance winter footwear companion. Insulation level: Removable Comfort-Fit multi-layer inner boot system Waterproof level: B-Tek Dry Waterproof Base Slip resistant Snowshoe compatible Technology Upper: D-Ring front lace fastening system Stylish, full grain insulated leather upper Seam-sealed for maximum water protection Base: Arctic(TM) Rubber shell to provide lightweight flexibility, cold-resistance and resilience EVA midsolefor lightweight insulation and cushioning Polar RubberA(R) outsole